DOW FILMTEC™ LP (Low Pressure) membrane elements deliver high quality water at low pressure operation in commercial applications. It replaces many “first generation” low pressure membrane elements and will purify more water in many older systems, especially on cold water feeds. DOW FILMTEC LP-2540 and LP-4040 elements are tape-wrapped—built with the same high quality membranes and materials of construction as industrial elements, except for the hard outer shell, and are more economical for commercial systems with one or two elements per housing